Press Release IUCN Shark Specialist Group (SSG) 05. June 2014 ————— Shark Specialists Prioritize Recovery of World’s Largest, Most Threatened Rays Durban, South Africa. June 5, 2014. The Shark Specialist Group (SSG) of the International Union for Conservation of Nature (IUCN) is today releasing a global strategy to prevent extinction and promote recovery of sawfishes,